Home›Exoplanets detected by direct imaging›HR 8799 d🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTürkçeРусскийالعربية한국어中文日本語EntityQ778639· pop 15· linked from 156 articlesHR 8799 dAlso known as HD 218396d, TIC 245368902dextrasolar planetExoplanet dataHost starHR 8799Discovered2008Discovered byW. M. Keck ObservatoryOrbital period37000 daysRadius13 × EarthMass3000 × EarthEquilibrium temp1300 KDistance41.24 pcvia NASA Exoplanet ArchiveWikidata factsImageExoplanet Comparison HR 8799 d.pngSources (2)wikidata.orgen.wikipedia.orgAvailable in 14 languagesEspañolFrançais中文日本語PortuguêsItalianoالعربيةBahasa IndonesiaCatalanCzechFinnishUkrainianConnectionsastronomical unitEntityW. M. Keck ObservatoryEntityCategoriesExoplanets detected by direct imagingExoplanets discovered in 2008Giant planetsHR 8799Pegasus (constellation)